A boat takes 21 hours for travelling downstream from point A to point B and coming back to a point C midway between A and B. if the velocity of the stream is 4 km/hr and the speed of the boat in still water is 12 km/hr, what is the distance between A and B:
Options
- 151.200 km
- 171.200 km
- 161.200 km
- 141.200 km
CORRECT ANSWER : 151.200 km
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